11220233505 has 16 divisors (see below), whose sum is σ = 19333325760. Its totient is φ = 5523807168.

The previous prime is 11220233501. The next prime is 11220233513. The reversal of 11220233505 is 50533202211.

It is a happy number.

It is not a de Polignac number, because 11220233505 - 2² = 11220233501 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11220233501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28769635 + ... + 28770024.

It is an arithmetic number, because the mean of its divisors is an integer number (1208332860).

Almost surely, 2^11220233505 is an apocalyptic number.

11220233505 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11220233505 is a deficient number, since it is larger than the sum of its proper divisors (8113092255).

11220233505 is a wasteful number, since it uses less digits than its factorization.

11220233505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57539680.

The product of its (nonzero) digits is 1800, while the sum is 24.

Adding to 11220233505 its reverse (50533202211), we get a palindrome (61753435716).

The spelling of 11220233505 in words is "eleven billion, two hundred twenty million, two hundred thirty-three thousand, five hundred five".